Dual-wavelength Rapid Excitation Raman Difference Spectroscopy System for Direct Detection of Ethanol in Illegal Beverages

2021 ◽  
Vol 49 (8) ◽  
pp. e21151-e21159
Author(s):  
Jian-Feng YE ◽  
Hao-Yun WEI ◽  
Xiao-Hua QI ◽  
Yan LI ◽  
Sheng WANG ◽  
...  
Keyword(s):  
Direct Detection ◽  
Dual Wavelength ◽  
Difference Spectroscopy ◽  
Spectroscopy System

A portable shifted excitation Raman difference spectroscopy system: device and field demonstration

2016 ◽  
Vol 47 (10) ◽  
pp. 1180-1184 ◽  
Author(s):  
Martin Maiwald ◽  
André Müller ◽  
Bernd Sumpf ◽  
Günther Tränkle
Keyword(s):  
Difference Spectroscopy ◽  
Spectroscopy System

Shifted excitation resonance Raman difference spectroscopy system suitable for the quantitative in vivo detection of carotenoids in human skin

2018 ◽  
Vol 15 (11) ◽  
pp. 115601 ◽  
Author(s):  
Marcel Braune ◽  
Martin Maiwald ◽  
Maxim E Darvin ◽  
Bernd Eppich ◽  
Bernd Sumpf ◽  
...  
Keyword(s):  
Human Skin ◽  
Resonance Raman ◽  
Difference Spectroscopy ◽  
In Vivo Detection ◽  
Spectroscopy System

Dual-wavelength wide area illumination Raman difference spectroscopy for remote detection of chemicals

2021 ◽  
Vol 60 (12) ◽  
pp. 3540
Author(s):  
Jianfeng Ye ◽  
Ziyang Tian ◽  
Yuxin Hu ◽  
Haoyun Wei ◽  
Yan Li ◽  
...  
Keyword(s):  
Dual Wavelength ◽  
Remote Detection ◽  
Wide Area ◽  
Difference Spectroscopy

scholarly journals Performances of a HGCDTE APD based direct detection lidar at 2 μm. Application to dial measurements

2018 ◽  
Vol 176 ◽  
pp. 01001 ◽  
Author(s):  
Fabien Gibert ◽  
Arnaud Dumas ◽  
Johan Rothman ◽  
Dimitri Edouart ◽  
Claire Cénac ◽  
...  
Keyword(s):  
Direct Detection ◽  
Single Mode ◽  
Dual Wavelength ◽  
Spectral Domain ◽  
Trace Gas ◽  
Lidar Measurements

A lidar receiver with a direct detection chain adapted to a HgCdTe APD based detector with electric cooling is associated to a 2.05 μm Ho :YLF pulsed dual wavelength single mode transmitter to provide the first atmospheric lidar measurements using this technology. Experiments confirm the outstanding sensitivity of the detector and hightligth its huge potential for DIAL measurements of trace gas (CO2 and H2O) in this spectral domain. Performances of coherent vs direct detection at 2.05 μm is assessed.

Red emitting monolithic dual wavelength DBR diode lasers for shifted excitation Raman difference spectroscopy

2014 ◽  
Author(s):  
B. Sumpf ◽  
M. Maiwald ◽  
A. Müller ◽  
F. Bugge ◽  
J. Fricke ◽  
...  
Keyword(s):  
Diode Lasers ◽  
Dual Wavelength ◽  
Difference Spectroscopy

Reflectance‐difference spectroscopy system for real‐time measurements of crystal growth

1988 ◽  
Vol 52 (12) ◽  
pp. 957-959 ◽  
Author(s):  
D. E. Aspnes ◽  
J. P. Harbison ◽  
A. A. Studna ◽  
L. T. Florez
Keyword(s):  
Crystal Growth ◽  
Real Time ◽  
Difference Spectroscopy ◽  
Reflectance Difference Spectroscopy ◽  
Spectroscopy System

Dual-Wavelength Y-Branch Distributed Bragg Reflector Diode Laser at 785 Nanometers for Shifted Excitation Raman Difference Spectroscopy

2014 ◽  
Vol 68 (8) ◽  
pp. 838-843 ◽  
Author(s):  
Martin Maiwald ◽  
Bernd Eppich ◽  
Jörg Fricke ◽  
Arnim Ginolas ◽  
Frank Bugge ◽  
...  
Keyword(s):  
Diode Laser ◽  
Bragg Reflector ◽  
Dual Wavelength ◽  
Difference Spectroscopy ◽  
Distributed Bragg Reflector
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